:root {
  --bg: #f6f6f4;
  --panel: #ffffff;
  --ink: #1b1b1a;
  --muted: #8a8a85;
  --line: #e3e3de;
  --accent: #2f5d50;
  --accent-soft: #e8efec;
  --warn: #9c5a2d;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

header {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 28px; background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 650; letter-spacing: .3px; }
.brand span { color: var(--muted); font-weight: 400; margin-left: 6px; }
header nav { display: flex; gap: 4px; }
.tab {
  border: 0; background: none; padding: 7px 14px; border-radius: 7px;
  font-size: 14px; color: var(--muted); cursor: pointer;
}
.tab.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.who { margin-left: auto; display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); }
.who input { width: 90px; padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; font-size: 12px; }

main { max-width: 1120px; margin: 0 auto; padding: 32px 28px 80px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 6px; }
.note { color: var(--muted); font-size: 13px; margin: 6px 0 0; }
.hidden { display: none !important; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }

.use-card {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin: 18px 0 4px; padding: 12px 14px;
  background: var(--accent-soft); border-radius: 8px; font-size: 14px;
}
.use-card label { font-weight: 600; color: var(--accent); }
.use-card select { padding: 6px 10px; border: 1px solid #cfdcd7; border-radius: 6px; background: #fff; min-width: 240px; }
.use-card .hint { color: var(--muted); font-size: 12px; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 20px 0 22px; }
.grid label, label.full { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
.grid label.wide { grid-column: 1 / -1; }
input, textarea, select { font: inherit; color: var(--ink); }
.grid input, label.full input {
  padding: 9px 11px; border: 1px solid var(--line); border-radius: 7px; background: #fff;
}
.grid input:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

button { font: inherit; cursor: pointer; }
.primary {
  background: var(--accent); color: #fff; border: 0;
  padding: 10px 20px; border-radius: 8px; font-weight: 600;
}
.primary:disabled { opacity: .5; cursor: default; }
.ghost {
  background: none; border: 1px solid var(--line); color: var(--muted);
  padding: 8px 16px; border-radius: 8px;
}

.spinner {
  width: 26px; height: 26px; margin: 8px auto 14px;
  border: 3px solid var(--line); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#panel-running { text-align: center; }

.result-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.result-head > div { display: flex; align-items: center; gap: 12px; }
.badge {
  font-size: 12px; padding: 4px 10px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
}
.badge.router { background: #f0efe9; color: var(--muted); }

.schemes { display: grid; gap: 20px; }
.scheme { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.scheme img { width: 100%; display: block; background: #eee; aspect-ratio: 16/9; object-fit: cover; }
.scheme-body { padding: 16px 18px; }
.scheme-body h3 { margin: 0 0 4px; font-size: 16px; }
.scheme-body .anchor { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.scheme-body textarea {
  width: 100%; min-height: 58px; padding: 9px 11px;
  border: 1px solid var(--line); border-radius: 7px; resize: vertical;
}
.scheme-foot { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.scheme-foot .attempt { color: var(--muted); font-size: 12px; margin-left: auto; }

.cards { display: grid; gap: 12px; margin-top: 18px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px;
}
.card h3 { margin: 0 0 4px; font-size: 15px; }
.card .sum { color: var(--muted); font-size: 13px; }
.card pre {
  margin: 10px 0 0; padding: 12px; background: #fafaf8; border-radius: 7px;
  font-size: 12px; line-height: 1.55; white-space: pre-wrap; max-height: 220px; overflow: auto;
}
.empty { color: var(--muted); padding: 30px 0; }

.modal { position: fixed; inset: 0; background: rgba(20,20,18,.42); display: flex; align-items: center; justify-content: center; padding: 24px; z-index: 50; }
.modal-box {
  background: #fff; border-radius: 12px; padding: 26px 28px;
  width: min(640px, 100%); max-height: 86vh; overflow: auto;
}
.modal-box label.full { margin: 16px 0; }
.sec { margin: 14px 0; }
.sec label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 5px; }
.sec textarea {
  width: 100%; min-height: 54px; padding: 9px 11px;
  border: 1px solid var(--line); border-radius: 7px; resize: vertical;
}
.sec.empty-sec textarea { background: #fbfbf9; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%);
  background: #23231f; color: #fff; padding: 11px 20px; border-radius: 8px;
  font-size: 14px; z-index: 100; max-width: 80vw;
}
.toast.err { background: var(--warn); }

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  main { padding: 22px 16px 60px; }
  header { padding: 12px 16px; gap: 14px; }
  .who { display: none; }
}